I just got off the phone with Hayward. Wanted to know how they could recommend CYA of 60 - 80 ppm (80 ppm best) and chlorine of 1 - 3 ppm for the Aqua Rite. This is what it says on the face plate and is generally what other SWCG manufactures have been recommending. Most people reading this will know that the recommendations do not correlate with the FC/CYA chart in pool school. After asking my question the tech person immediately said that they are now recommending 30 - 50 ppm. He said that this is a new change they have made recently. He seemed to know what he was talking about. I was unable to find anything on the internet or any documentation from Hayward but did find the following which some of you may find interesting.
New Thinking: Chlorine/Cyanuric Acid In Balance - AQUA Magazine
And if you really want to go for a deep dive